Pressure regulator assembly with improved cartridge

Abstract

An improvement in a pressure regulator including the usual valve body, seat, poppet, adjustable spring having a bottom plate for co-acting with the low pressure diaphragm member. The improvement comprises an improved regulator in which the poppet includes a centering extension shaft extending to the low pressure side of the valve seat and a larger diameter shaft in communication with the high pressure inlet chamber and having the valve seat include centering upper protrusion that closely engages the centering extension shaft of the poppet with at least three and no more than six slots disposed substantially uniform thereabout such that gas can flow about the valve poppet centering extension shaft through the valves without inducing destructive and noisy vibration when gas flow is called for by the regulator.

What is claimed is: 
     
       1. In a pressure regulator for reducing pressure from high pressure to a low pressure and including: a. a valve body having inlet and outlet passageways and chambers;   b. a valve seat intermediate said inlet and outlet chambers;   c. a valve poppet for sealingly engaging against said valve seat;   d. adjustable spring with a bottom plate for adjusting the low pressure; and   e. diaphram member communicating with said low pressure chamber so as to sense said low pressure and opposing said adjustable spring so as to allow said valve poppet to close against a valve seat when said pressure becomes great enough and to open when said low pressure is below, the predetermined pressure set on said adjustable spring;   the improvement comprising:   f. having said poppet include a centering extension shaft extending to the low pressure side of said valve seat and a larger diameter shaft in communication with said high pressure inlet chamber; and   g. having said valve seat include centering upper protrusion that closely engages said centering extension shaft of said poppet with at least three and no more than six slots disposed substantially uniformly thereabout such that gas can flow about said valve poppet centering extension shaft through said valve seat without inducing destructive and noisy vibration when gas flow is called for by said adjustable spring opposing said diaphram member.   
     
     
       2. The pressure regulator of claim 1 wherein said centering upper protrusion of said valve seat includes four slots; two each being diametrally opposite each other. 
     
     
       3. The pressure regulator of claim 1 wherein said valve seat is formed of a thermoplastic material and said valve poppet is formed of a metallic material. 
     
     
       4. The pressure regulator of claim 3 wherein said thermoplastic material is chlorotrifluoroethylene. 
     
     
       5. The pressure regulator of claim 1 wherein said larger diameter shaft of said valve poppet is surrounded by second spring by said valve poppet toward its closed position such that said second spring and high pressure tend to close said valve poppet when said low pressure becomes too high; and said centering extension shaft is adapted to engage said diaphram and said bottom plate of said adjustable spring so as to open said valve poppet when said low pressure becomes too low. 
     
     
       6. A pressure regulator for reducing presence from high pressure to low pressure comprising: a. a valve body having inlet and outlet passageways and chambers;   b. a valve cap including an adjustable spring for adjusting the flow pressure and having a bottom plate; diaphram means communicating with the low pressure chamber and contiguous the bottom plate on said adjustable spring and opposing said adjustable spring so as to allow a valve poppet to close against a valve seat when the pressure becomes great enough and to open a valve poppet when the pressure is too low; an improved cartridge that includes a reciprocally moveable valve poppet adapted to seat against a valve seat; said poppet including a centering extension shaft extending to the low pressure side of said valve seat and a larger diameter shaft in communication with a high pressure inlet chamber; said valve seat including centering upper protrusion that closely engages said centering extension shaft of said poppet, with at least three and no more than six slots disposed substantially uniformly thereabout such that gas can flow about such valve poppet centering extension shaft through said valve seat without inducing destructive and noisy vibration when gas flow is called for by said regulator.   
     
     
       7. The pressure regulator of claim 1 wherein said valve seat includes four slots; two each being diametrally opposite each other. 
     
     
       8. Pressure regulator of claim 1 wherein said valve seat is formed of thermoplastic material and said valve poppet is formed of metallic material. 
     
     
       9. The pressure regulator of claim 8 wherein said thermoplastic is chlorotrifluoroethylene. 
     
     
       10. The pressure regulator of claim 6 wherein said larger diameter shaft of said valve poppet is surrounded by a second spring biasing said valve poppet toward its closed position such that said second spring and high pressure tend to close said valve poppet when said low pressure becomes too high; and said centering extension shaft is adapted to engage said diaphram and said bottom plate of said adjustable spring so as to open said valve poppet when said low pressure becomes too low.